Page 114 - Driving Commercial Vehicles Manual+

chapter 5 — skills for driving trucks and trailers

• Where the articles of cargo on or within a vehicle are placed beside each
other and secured by tiedowns that pass over two or more articles, the
articles shall be:

d) placed in direct contact with each other, or
e) prevented from moving towards each other while the vehicle is on a
highway.
• Where any cargo or portion thereof may roll, it shall be restrained by
chocks, wedges, a cradle or another securing device that prevents the
cargo from rolling.
For bagged products such as cement, fertilizer or other products packaged in
bags and then stacked on pallets for shipment, interlocking the bags on the
pallets and wedging the pallets on the trailer isn’t enough. Secure the bags by
tiedowns and dunnage (corner boards).
If a load is supported on rollers, then lock at least one roller to prevent the
load from shifting. The load must also have adequate tiedowns.

At least one roller must be locked.

This load is supported on
rollers and secured with
tiedowns. Lock at least one
roller.

Aggregate loads — An aggregate load is a collection of small articles. Sand,
gravel, pieces of paper or wood chips are all types of aggregate loads. If
these loads can’t be contained with sideboards or tiedowns, you must use a
cover or tarp so pieces don’t escape from the vehicle.
You must use a cover or tarp to secure your load if:

• the load is made up of aggregate material, and
• the load is likely to bounce, blow or drop from the moving vehicle.
These two examples show the same kind of truck carrying different types of
aggregate loads.

Since this dump truck is
carrying ¾-inch crushed
stone, use a cover or tarp.

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